Dynamic compressive strength of Zn–22Al foams

Liu, Jiaan; Yu, Sirong; Song, Yulai; Zhu, Xianyong; Wei, Ming; Luo, Yanru; Liu, Yaohui

doi:10.1016/j.jallcom.2008.09.007

Cited by 10 publications

(4 citation statements)

References 11 publications

(28 reference statements)

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“…The Zn22Al alloy foam was already elaborated using the melt foaming method and CaCO 3 as blowing agent to determine its compressive properties [3] and dynamic compressive strength [4]. This foam was as well processed with titanium hydride (TiH2) as a blowing agent to find the effect of porosity on tensile and compressive deformation [5].…”

Section: Introductionmentioning

confidence: 99%

Compressive behavior of a Zn-22wt%Al-2wt%Cu cellular alloy with different densities, microstructures and cell shapes

2021

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Zn22Al2Cu cellular alloy was prepared with six different densities, two microstructures and two cell shapes to determine the effect of these factors on its compressive behavior. NaCl granules with sharp edges, as purchased and with smooth edges obtained by roughly polishing the purchased granules were used as spacers. The elaboration process of the alloy foam consisted of melting the alloy, immersing the granules in the liquid alloy, air-cooling and then dissolving the salt in boiling water. The matrix obtained with the materials had an as-cast microstructure, and a fine microstructure, which was achieved with a heat treatment applied prior to dissolving the NaCl granules. Samples were tested in compression at a 10-3 s-1 strain rate. The smooth shape of the cells caused that the as-cast microstructure in the matrix produces an elastic behavior, which is described by the equation derived by Ashby for the relative elastic modulus and the relative density of sponges. The same type of cell shape embedded in the fine microstructure produces an elastic behavior in compression that depends on the density, which is typical of very low-density foams, although much lower than those achieved in this study. Compressive behavior is chaotic when cells have sharp shape, regardless microstructure type. The alloy studied with 4 mm mean size cells has a compression behavior like a sponge or low-density foam, when its cell walls have smooth contours, and as-cast or fine microstructure, respectively.

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Section: Introductionmentioning

confidence: 99%

Compressive behavior of a Zn-22wt%Al-2wt%Cu cellular alloy with different densities, microstructures and cell shapes

2021

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“…There are many manufacturing routes having been reported for Zn alloy foams, such as the melt foaming method [5,6], the replication process [7], the casting method [8] and powder metallurgical process [9]. The powder metallurgy route is one of the best methods to obtain good quality foams with relative densities as low as 10% [10] and uniform pore distribution.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Zn Alloy Foam via Powder Metallurgical Approach

Chen

Yang

Lü

et al. 2016

MSF

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Powder metallurgical (PM) route is one of the methods for metal foam fabrication. In this paper, we report the fabrication of Zn alloy foams with 0~50wt.% Mg via powder metallurgical approach by using CaCO3 as the blowing agent. The fabrication process included 5 steps: powders mixing, cool-pressing, heat treatment, hot-pressing, foaming and cooling. The effects of Mg addition, foaming temperature on the foaming process were discussed. Finally, the compressive behavior of Zn alloy foam was evaluated.

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“…In the past decades, dynamic mechanical response of aluminium foam under impact has been intensively investigated using the split Hopkinson pressure bar (SHPB) [2] technique with focus on energy absorption [3,4], strain rate sensitivity [5,6] and compression deformation [7,8]. The deformation of aluminium foam containing heterogeneous mesostructure was observed to be spatially non-uniform, accompanied with localized weak bands [7] and progressive cell wall breakage [8].…”

Section: Introductionmentioning

confidence: 99%